What is my holy grail?
I believe that some great baseball content is out there somewhere in a great-grandparent’s scrapbook. Past generations saved letters, pasting them (or hopefully, using photo corners) into scrapbooks. Not three-ring binders and plastic pages.
I love the vintage team logo stationery, too.
Keep watch. You may even be able to make a deal for a photocopy from a seller, or a collector who is wanting to slice up the scrapbook contents for the autographed cards and photos.
Spread the word. Keep hope. Your letter is out there!